package com.lihaonan.homework1;

public class qwer {
    public static void main(String[] args) {
        System.out.println(Math.abs(1));

        Point point = new Point();
        Point point1 = new Point(1,2);
        point.setX(2);
        point.setY(2);
        System.out.println(point1.distance(point));
    }


}
